The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input from the 'field_value' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
CVE-2025-3439 is a critical severity with CVSS 9.8 Vulnerability issue affecting the Plugin Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder. It affects Versions up to 3.1.1 and is fixed in 3.1.2.
CVE-2025-3439 is tracked for the Plugin Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder as critical severity with CVSS 9.8. The affected range is Versions up to 3.1.1. Update Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder to 3.1.2 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
everest-forms
View on wordpress.org
|
| CVE | CVE-2025-3439 |
| Patched Versions |
3.1.2
|
| Affected Versions |
Versions up to 3.1.1
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Everest Forms <= 3.4.3 - Unauthenticated PHP Object Injection via Form Entry Metadata
Everest Forms <= 3.0.9.4 - Unauthenticated Arbitrary File Upload, Read, and Deletion
Contact Form, Drag and Drop Form Builder for WordPress – Everest Forms <= 1.4.9 - SQL Injection
Everest Forms <= 3.4.4 - Unauthenticated Arbitrary File Read and Deletion via Upload Field 'old_files' Parameter
Everest Forms <= 3.2.2 - Unauthenticated PHP Object Injection
Everest Forms <= 2.0.7 - Unauthenticated Server-Side Request Forgery via font_url
Everest Forms <= 3.1.1 - Reflected Cross-Site Scripting
Everest Forms <= 1.7.9 - Reflected Cross-Site Scripting
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